There are many causes of cranial defects in real life, some may be caused by traffic accidents, some are injured by heavy objects, some are cranial defects after craniotomy for their own intracranial diseases, and some may be lesions in the skull itself and have to go to the bone flap. Whatever the cause of the skull defect, it needs to be repaired as soon as possible. If a skull defect is left unrepaired for a long period of time, it can have both physical and psychological effects on the person. First of all, it will cause unsightly and asymmetrical skull appearance, and even cranial collapse or bulging, which will make patients have a deep sense of inferiority; secondly, without the protection of hard shell, the brain tissue will be easily injured by external tissues; in addition, cranial defect will cause changes in the intracranial environment and unstable intracranial pressure, which will affect the normal cerebrospinal fluid circulation and blood circulation, thus affecting the normal neurological function. Therefore, cranial bone repair is very necessary. Currently, we perform polyetheretherketone PEEK cranial repair plastic surgery, which has been widely recognized and praised by patients. The PEEK cranial repair surgery uses peek as the implant material and is an embedded repair, which avoids the many shortcomings of titanium mesh cranial repair. In addition, after hundreds of successful cases, we have 4 technical innovations and adopt unique material thickness and mesh aperture design as well as unique tissue separation and repositioning technology during surgery, which makes both sides symmetrical and comfortable after surgery, and also effectively avoids temporal muscle atrophy, which is a very excellent cranial repair surgery. As to the question of whether the cost of cranial repair can be reimbursed, those who have medical insurance or New Agricultural Cooperative can enjoy the reimbursement policy, which can be assured. However, we need to consult the local medical insurance policy for the specific reimbursement rate.